Generac 40kW Protector Standby Generator
Forty kilowatts. Retail, clinics, churches.
Liquid-cooled, single-phase or three-phase, in the voltage your building already has. Retail, small clinics, churches, and the occasional very large house.
Financing through Synchrony and others. How that works →
Generac Prestige DealerGenerac's highest dealer designation. We sell, install and service Generac home standby generators.
Generac generatorsWhat a 40kW runs. Mostly buildings, and the occasional very large house.
Single-phase or three-phase commercial loads: retail floors, clinics, churches. Sized from a load study, not a square-footage table.
- Rooftop HVAC and make-up air
- Lighting, registers and the sales floor
- Refrigeration and walk-in coolers
- Exam rooms, offices and the equipment
- Server rooms, security, egress lighting
Typical commercial loads. A load study on site decides the size. Request a free site visit and we measure what has to stay on.
For a building full of people that can't go dark.
Exam rooms, sanctuaries, sales floors. Forty kilowatts keeps the lights, the AC, and the equipment on for all of it.
Or a very large home on single-phase.
HVAC, lighting, registers, refrigeration, the equipment that makes you money.
Senses the outage, starts itself, switches the building over. Hands it back when CenterPoint returns.
- Pick it if: a clinic, a church, a store, or a very large home, and the load lands around 40.
- Step up if: multi-tenant or a bigger clinic. That's the 48 or 60.
Not sure? Five taps on the calculator gets you a size, or call and we'll size it on the phone.
In plain English.
Generac's spec sheet has a lot of words on it. This is what they mean for you.
It turns itself on.
Power goes out, it senses it, starts, and switches everything over in about ten seconds. Power comes back, it hands it back. Nobody has to be there.
A car-style engine, built to run for days.
Liquid-cooled, like the engine in your truck. It runs cooler, quieter, and longer than an air-cooled unit, which is why this is what goes in when the load is big or the outage might be long.
Quieter than the size suggests.
A sound-attenuated enclosure and a slower-turning engine. Neighbors, patients, and diners notice less than you'd think.
It runs on natural gas or propane.
The gas line you already have, or a tank. No diesel deliveries, no fuel going stale.
Single-phase or three-phase.
We match the unit to the service your building already has. You don't need to know which. We look at the meter.
You can watch it from your phone.
Mobile Link app. Cellular built in with Wi-Fi backup. Status, run history, and service alerts from anywhere, and the servicing dealer can see faults early.
Wired installs, around Houston.
Real photos of our installs around Houston and Tomball: the unit set on its pad, the transfer switch and gas line run, and the startup test before we leave. The unit in a photo may be a different size than this one.
For the people who want them.
Everything below is from Generac. Ask us if any of it needs explaining. That's what we're for.
| Power | 40kW on natural gas · 40kW on propane |
|---|---|
| Electrical | 120/240 volts single-phase, or 208/120 three-phase (configurable to 240/120 or 480/277)Comes in single-phase or three-phase. We match your service. |
| Fuel | Natural gas or propane, picked at the controllerRuns on the gas line already at the house. No gas cans. |
| Model numbers we stock | XG04045ANAX · 120/240 V single-phaseXG04045ANAC · 120/240 V single-phase, CA/MA emissionsXG04045CNAX · 120/208 V three-phase, configurableXG04045CNAC · 120/208 V three-phase, configurable, CA/MA emissionsSame generator, different electrical service. We pick the one that matches your meter. |
| Transfer switch | Not in the box. We match a Generac automatic transfer switch to your service as part of the install. |
| Engine | Generac 4.5-liter inline four-cylinder, liquid-cooled, turning a slow 1,800 rpm. Built to run for days. |
| Case | Aluminum, Metro Gray, sound-attenuated, on a galvanized base frame. Rated for winds to 145 mph.Aluminum doesn't rust. That matters in Houston humidity. |
| Sound | 66 dB running · 59 dB during the weekly self-testMeasured 23 feet away. For reference, a central AC unit is in the same range. |
| Fuel use | Natural gas: 297 ft³/hr at half load, 494 at full. Propane: 3.8 gal/hr at half load, 5.8 at full.How much gas it burns at half load and full load. Your gas bill goes up only while it's running. |
| Size | 83.4" long × 34" wide × 45.2" tall |
| Weight | 1,780 lb |
| Warranty | Generac 5-year / 2,000-hour limited warranty |
| Phone app | Mobile Link app. Cellular built in with Wi-Fi backup. Status, run history, and service alerts from anywhere, and the servicing dealer can see faults early. |
No price tag on the website. Here's why, and how to get your number.
The unit is only part of it. The gas run, the pad, the transfer switch, and your panel change the number from one house to the next, so a price on a web page would be wrong for most people. Getting the real one is quick.
Two minutes on the phone
Tell us the size of the house and what you want to keep running. We'll tell you if the 40 is the one and what an install like yours usually involves.
Call (713) 467-1125We come look, then quote it
We count your circuits, check the gas meter, and pick the spot. You get a written, itemized number. No allowances that turn into surprises.
Book the free visitMonthly, if you'd rather
Synchrony plans on generators and electrical work, and other lenders if Synchrony isn't the fit. We show you the options at the visit.
See the plansFree visit, permit, one day, lights back in ten seconds.
- Site walk. We look at your service, your load, and where the unit and switch would go. Free.
- A real quote. Written, itemized, in the phase and voltage your building already has.
- Permit and install. Our own crews, scheduled around your hours. Nights and weekends if that keeps your doors open.
- Load test. We throw the main with you watching and hand you the report.
Compare it with the others.
Single-phase or three-phase, in the voltage your building already has. Grocery, cold storage, churches, warehouses, multi-building sites.
Small shops, offices, and strip-center suites on three-phase service.
See this one →Retail, small clinics, churches. Big houses, too.
You're looking at this oneLarger clinics, small multi-tenant buildings.
See this one →Warehouses, manufacturing, car washes, mid-size retail.
See this one →Bigger facilities, multi-tenant buildings, larger clinics.
See this one →Grocery, larger clinics, churches with a campus, multi-building.
See this one →Cold storage, light industrial, restaurants with a big walk-in.
See this one →Industrial, data and telecom, multi-building sites.
See this one →Ask about the 40kW.
Tell us about the house and we'll tell you if the 40 is the right one, what the install involves, and what the payment options look like. No pressure, and the visit is free.
(713) 467-1125 13910 Alice Road, Tomball, Texas 77377wired@wiredes.com · Open 24/7 · Showroom on Alice Road, come see the units
Rather see it first?
Some of these are on the showroom floor at 13910 Alice Road in Tomball. Come by, or call and we'll tell you what's out there right now.
Call (713) 467-1125